A general catalytic synthetic strategy for highly strained methylenecyclobutanes and spiromethylenecyclobutanes
作者:Haotian Zhao、Yu Lin、Mingyu Jiang、Bo Su
DOI:10.1039/d3sc01103h
日期:——
Highlystrained methylenecyclobutanes (MCBs) are intriguing scaffolds in synthetic chemistry and drug discovery, but there is no such strategy that enables the synthesis of structurally diverse MCBs with defined stereochemistry. We report a general synthetic strategy for (boromethylene)cyclobutanes (BMCBs) and spiro-BMCBs by a challenging Cu-catalyzed highly chemo-, stereo-, and regioselective borylative
Diester compound having a dimethylcyclobutane ring, a process for preparing the same, and a process for preparing dimethylcyclobutane compound derived from the diester compound
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US11352312B2
公开(公告)日:2022-06-07
The present invention provides a process for preparing a diester compound of the following general formula (1), having a dimethylcyclobutane ring, wherein R1 and R2 represent, independently of each other, a monovalent hydrocarbon group having 1 to 10 carbon atoms, the process comprising reacting a dimethylcyclobutanone compound of the following general formula (2), wherein R1 is as defined above, with a phosphonic ester compound of the following general formula (3), wherein R2 and R3 represent, independently of each other, a monovalent hydrocarbon group having 1 to 10 carbon atoms, to produce the diester compound (1), having a dimethylcyclobutane ring.